While Prime Minister Justin Trudeau's youngest brother tragically died in an avalanche nearly 18 years ago, the family has found beautiful ways to remember Michel. One was during Trudeau's eldest son's baptism.

Xavier Trudeau is nearly nine years old now, and his birth was actually full of symbolism.

He was born in 2007 on October 18, the same day his dad proposed to his mom three years earlier and on what would have been Pierre Trudeau's 88th birthday. Yes, grandfather and grandson share the same birth date.

His mom, Sophie Grégoire Trudeau, was a childhood friend of the uncle he never got to meet. And in an interview with The Globe and Mail, Sophie revealed the beautiful way the family remembered Michel during Xavier's baptism.

Margaret Trudeau with her youngest son, Michel, during a visit with her family in 1977.

She told the paper that Xavier and his cousin Pierre (Alexandre's oldest) were both baptized with "Michi's water." This is water that Margaret Trudeau was collecting every year from B.C.'s Kokanee Lake, where her youngest son died.

In his memoir, Justin Trudeau remembers getting the call from his mom that something had happened to Michel. Justin was a substitute teacher at the time.

"While I had been standing at a blackboard, an avalanche had swept my brother and one of his buddies into Kokanee Lake. They had been traversing the steep incline above the lake. His pal Andy managed to swim to shore, but Michel was just too far out. It had taken his other friends hours to dig themselves out and contact the RCMP."

"I still miss him. I will always miss him," wrote Trudeau. "Michel was just 23 when he died, but he had already found his calm zone, a private place that eludes many of us throughout our lives. If Michel were alive today, I believe he would be the father of teenage children, and that Sophie and I and our kids would visit him and his family each Christmas. Perhaps Michel would have launched his own ski tourism operation; he loved the sport, and I believe he had a knack for business. In his spare time, he would have found a way to bring out his creativity through painting or writing. Whatever he chose to do, I know he would have been happy doing it. That was his gift."

Eleven-month-old Justin Trudeau, urged on by his mother Margaret Trudeau, crawls up the steps of an aircraft in Ottawa on Dec. 5, 1972 to meet his father, then-prime minister, Pierre Trudeau on his return from Britain.

Pierre Trudeau is saluted by RCMP Officer as he carries son Justin to Rideau Hall in 1973. Justin Trudeau teared up when he was presented with a framed copy while visiting Loyalist College in 2013.

Prime Minister Pierre Trudeau (centre) with his three sons (left to right) Alexandre (Sacha), Michel and Justin May 11, 1979.

Alexandre (Sacha) Trudeau delivers a right hook to his older brother Justin during a play fight in 1980 at Ottawa airport as the boys await a flight with the return of their father, then-prime minister, Pierre Trudeau. Nobody was injured. Justin was born in 1971 and Sacha in 1973 -- both on Christmas day.

It was a big day for Dad, but a long day for the three Trudeau children. Left to right, Justin, Michel and Alexandre (Sacha) Trudeau attended the swearing-in ceremony of their father Pierre Elliott Trudeau as Prime Minister March 3, 1980 at Government House.

In this June 25, 1980 photo, British Prime Minister Margaret Thatcher, Canadian Prime Minister Pierre Trudeau and his son Justin, 8, speak outside No. 10 Downing Street, in London.
On Monday, Oct. 19, 2015, Canadian voters reclaimed their country's liberal identity sending Justin Trudeau to the prime minister's office and ending 10 years of conservative leadership under Stephen Harper. At 43, he becomes the second youngest prime minister in Canadian history.

Prime Minister Pierre Trudeau is welcomed home from his European trip June 27, 1981, by his three sons nine-year-old Justin (left), five-year-old Michel (centre), and seven-year-old Alexandre (Sacha) getting a kiss from Dad.

Prime Minister Pierre Trudeau attends the Remembrance Day ceremonies with his three sons, from left, Justin, Michel and Sacha on November 11, 1981 in Ottawa.

Prime Minister Pierre Trudeau took his sons to watch the official opening Canada Day ceremonies on Parliament Hill July 1, 1983 in Ottawa.

Prime Minister Pierre Trudeau and his three sons pose for a snapshot in front of the Parthenon on the Acropolis in Athens Aug. 30, 1983. From left are Michel, Alexandre (Sacha) and Justin in rear.

The three sons of Canadian Prime Minister Pierre Trudeau stand in line wearing Greek sailors’ caps as their father bids thanks to Greek officials in Athens, Greece on Sept. 2, 1983.

Then-prime minister Pierre Trudeau, left, watches as his 11-year-old son Justin swings on a chain during a tour of an old fort in the Omani town of Nizwa on Dec. 2, 1983. Trudeau and Justin spent the day visiting the towns of Jebel and Nizwa in Oman.

Then-prime minister Pierre Trudeau's 11-year-old son Justin jumps off an old cannon while visiting a fort along with his father in the Omani town of Nizwa and Jebel.

Prime Minister Pierre Trudeau waves with his sons Justin (left) Alexandre (Sacha) and Michel on stage at the Ottawa Civil Centre in 1984.

Prime Minister Pierre Trudeau, with son Justin, left, applauds during a Liberal convention in Edmonton on Thursday, June 14, 1984.

Former Prime Minister Pierre Trudeau shows how tall his eldest son Justin has grown in relation to himself during the seventh inning stretch at the Montreal Expos game in Montreal on April 20, 1987.